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    • 4. 发明授权
    • Method and system for synchronizing the phase of a plurality of divider circuits in a local-oscillator signal path
    • 用于使本地振荡器信号路径中的多个分频器电路的相位同步的方法和系统
    • US08704559B2
    • 2014-04-22
    • US13401706
    • 2012-02-21
    • Keng Leong FongJohn WongJenwei Ko
    • Keng Leong FongJohn WongJenwei Ko
    • H03L7/00
    • H03L7/00H03K23/425H03K23/665
    • A method and system for synchronizing the output signal phase of a plurality of frequency divider circuits in a local-oscillator (LO) or clock signal path is disclosed. The LO path includes a plurality of frequency divider circuits and a LO buffer for receiving a LO signal coupled to the plurality of frequency divider circuits. The method and system comprise adding offset voltage and setting predetermined state to each of the frequency divider circuits; and enabling the frequency divider circuits. The method and system includes enabling the LO buffer to provide the LO signal to the frequency divider circuits after they have been enabled. When the LO signal drives each of the frequency divider circuits, each of the frequency divider circuits starts an operation. Finally the method and system comprise removing the offset voltage from each of the frequency divider circuits to allow them to effectively drive other circuits.
    • 公开了一种用于使本地振荡器(LO)或时钟信号路径中的多个分频器电路的输出信号相位同步的方法和系统。 LO路径包括多个分频器电路和LO缓冲器,用于接收耦合到多个分频器电路的LO信号。 该方法和系统包括增加偏移电压并将预定状态设置到每个分频器电路; 并启用分频器电路。 该方法和系统包括使得LO缓冲器在它们被使能之后向分频器电路提供LO信号。 当LO信号驱动每个分频器电路时,每个分频器电路开始一个操作。 最后,该方法和系统包括从每个分频器电路去除偏移电压,以允许它们有效地驱动其它电路。